The application is the highest level in the control structure. It is a view of all the objects you currently need while you are working. An application keeps track of the projects you use and the environment settings while you are developing your Java program.

You create an application by invoking the Create Application dialog box in one of the following ways:

If there is an application already open in JDeveloper, invoke the application drop-down list and select New Application. If there is no open application, click New Application.